The problems on defense are being covered up by TOP by the offense. We are currently 5th in the league. Last season we ended up 24th.
This defense is still getting gashed. But when you limit the other team's offensive possessions (and their opportunity to score) you can still win some games despite a bad defense.
These is some truth to this, but probably less than most think. IOW, I don't think you can chalk up the defense's performance so far to the offense's TOP and call it a day.
The defense is allowing 1.75 points per drive this year, which ranks 7th. Last year it was 2.31 (30th). This is points per drive, so it doesn't matter that they're facing fewer drives per game. (Last year's defense faced 11.5 drives per game. This year, it's 10. 2).
Take last year's defense and give them 10.2 drives per game to have to face, and they'd have still given up 23.6 points per game in 2013 (instead of 26.6, which was the actual number). Take this year's defense and give them 11.5 drives per game to face, and they be giving up only 20.1 points per game (instead of 17.9, the actual number).
If that last paragraph made you dizzy, just know that you could take this year's running game, put it with last year's defense, and still be giving up more than a FG per game
more than you would be with this year's defense and last year's running game.
The high defensive ranking is mostly based on all the takeaways, which probably has a lot to do with quality of opponent. Three of the five offenses we've faced rank 20th or lower in both points per drive and turnovers per drive.
To the defense's credit, the opposing offense's TOP per drive is down from 12th to 20th over last year (Amazingly, our defense ranks 13th in TOP after having faced 3 of the top 6 offenses in TOP so far), and opponents' yards per drive is down from 2nd to 10th. So one of the reasons the defense is facing fewer plays is that the opposing offense is being kept off the field by our offense, but another reason is that this defense is getting opposing offenses off the field. Our opponent's drive success rate (the percentage of down series that end in a first down--the lower the ranking, the better the defense) ranks 18th this year. It was 1st last year.